Explanation of how the number of participants for analysis was determined.
Includes whether analysis was per protocol, intention to treat, or another method.
Also provides relevant details such as imputation technique, as appropriate.

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Reporting Groups

Description

Saline

Sterile saline for injection is used as placebo arm. It is administered i.m. in the same way as for the active vaccine, week 0, 2, 4, 8.